Table 1. Baseline characteristics, follow-up, and survival according to primary kidney disease.
| Type 2 diabetes | Type 1 diabetes | Glomerulo-nephritis | Polycystic kidney disease | Nephro-sclerosis | Other or unknown diagnoses | All patients | P value | |
|---|---|---|---|---|---|---|---|---|
| Number of patients (%) | 1720 (19.8) | 1315 (15.1) | 1207 (13.9) | 826 (9.5) | 539 (6.2) | 3089 (35.5) | 8696 (100) | |
| Kidney biopsy, % | 13.5 | 7.6 | 86.7 | 1.8 | 27.9 | 29.1 | 28.3 | <0.001 |
| Male gender, % | 69.0 | 65.5 | 71.6 | 51.7 | 72.7 | 62.8 | 65.2 | <0.001 |
| Median age at KRT start in years (25 th –75 th percentile) | 67.0 (60.5–73.0) | 47.3 (39.2–55.6) | 59.7 (46.8–69.2) | 57.9 (51.1–64.8) | 71.8 (62.5–78.5) | 67.5 (56.3–75.8) | 63.2 (51.6–72.2) | <0.001 |
| Median follow–up time in years (25 th –75 th percentile) | 2.65 (1.28–4.78) | 3.87 (1.68–8.61) | 5.00 (1.97–9.56) | 5.97 (2.78–10.58) | 2.67 (1.21–5.16) | 2.95 (1.12–6.20) | 3.41 (1.41–7.02) | <0.001 |
| Hemodialysis as the first treatment modality, % | 83.1 | 55.6 | 68.2 | 77.7 | 76.1 | 81.1 | 75.2 | <0.001 |
| Kidney transplantation during follow-up, N (N/100 patient-years) | 186 (3.1) | 628 (8.7) | 609 (8.1) | 557 (9.6) | 105 (5.1) | 739 (5.6) | 2824 (6.8) | <0.001 |
| Median survival in years (95% CI) | 3.26 (3.08–3.43) | 7.95 (6.83–9.07) | 12.23 (10.88–3.57) | 15.41 (N/A) | 4.02 (3.53–4.51) | 4.45 (4.19–4.72) | 5.39 (5.18–5.60) | <0.001 |
| Number of deaths (N/100 patient-years) | 1294 (21.6) | 619 (8.6) | 445 (5.9) | 236 (4.1) | 342 (16.7) | 1857 (14.0) | 4793 (11.5) | <0.001 |
| Cardiovascular cause of death, % | 46.8 | 57.0 | 44.0 | 37.7 | 45.3 | 31.8 | 41.5 | <0.001 |
95% CI, 95% confidence interval.